Plan cloud upload decisions in app core

docs/modernization/roadmap.md

@@ -444,6 +444,10 @@ stems, and MP4 suggested names used by the live export dialogs.
 used by live image, layer, animation-frame, depth, and cube-face export dialogs
 plus MP4 animation and timelapse export dialogs before they call legacy
 canvas/recording export execution.
+`pano_cli plan-cloud-upload` exposes the app-core cloud upload decision used by
+the live cloud upload command for missing-canvas, new-document warning, publish
+prompt, and dirty-document save-before-upload states before legacy UI, canvas,
+and network execution continue.
 `pano_cli parse-layout` exercises the XML layout path. Continue expanding
 document behavior toward legacy Canvas parity and then port OpenGL classes
 behind the renderer boundary.
@@ -889,6 +893,14 @@ Results:
   sample counts/distances.
 - `pano_cli_simulate_stroke_script_smoke` passed and reports deterministic
   aggregate stroke-script counts/distances.
+- `pp_app_core_document_cloud_tests` passed, covering cloud upload no-canvas,
+  new-document warning, clean publish prompt, and dirty save-before-upload
+  decisions.
+- `pano_cli_plan_cloud_upload_clean_smoke`,
+  `pano_cli_plan_cloud_upload_unsaved_smoke`,
+  `pano_cli_plan_cloud_upload_new_document_smoke`, and
+  `pano_cli_plan_cloud_upload_no_canvas_smoke` passed and expose those app-core
+  cloud upload decisions as JSON.
 - `panopainter_validate_shaders` passed, validating 25 shader programs and 7
   shader includes for stage markers and include graph integrity.
 - `pp_renderer_gl_capabilities_tests` passed on default MSVC, vcpkg-headless,